class: center, middle, inverse, title-slide # Cleaning, Summarizing, and Visualizing Data ### Updated 2022-02-04 --- # Working With Data * Econometrics is about `data` * According a to [2014 NYTimes article](https://www.nytimes.com/2014/08/18/technology/for-big-data-scientists-hurdle-to-insights-is-janitor-work.html), "data scientists [...] spend from ***50 percent to 80 percent of their time*** mired in this more mundane labor of collecting and preparing unruly digital data, before it can be explored for useful nuggets." * In the next two lectures you will learn the basics of ***tidying***, ***visualising*** and ***summarising*** data